From 3dc8bee3cb3a472dcf8d3990a6623327ac75d985 Mon Sep 17 00:00:00 2001
From: sinanmohd <sinan@sinanmohd.com>
Date: Fri, 5 Dec 2025 09:38:13 +0530
Subject: feat(cez/specialisation/heater): init

---
 os/cez/modules/specialisation/default.nix |  6 ++++++
 os/cez/modules/specialisation/heater.nix  | 31 +++++++++++++++++++++++++++++++
 os/cez/modules/specialisation/nvidia.nix  | 25 +++++++++++++++++++++++++
 3 files changed, 62 insertions(+)
 create mode 100644 os/cez/modules/specialisation/default.nix
 create mode 100644 os/cez/modules/specialisation/heater.nix
 create mode 100644 os/cez/modules/specialisation/nvidia.nix

(limited to 'os/cez/modules')

diff --git a/os/cez/modules/specialisation/default.nix b/os/cez/modules/specialisation/default.nix
new file mode 100644
index 0000000..c7fb4aa
--- /dev/null
+++ b/os/cez/modules/specialisation/default.nix
@@ -0,0 +1,6 @@
+{
+  specialisation = {
+    nvidia.configuration.imports = [ ./nvidia.nix ];
+    heater.configuration.imports = [ ./heater.nix ];
+  };
+}
diff --git a/os/cez/modules/specialisation/heater.nix b/os/cez/modules/specialisation/heater.nix
new file mode 100644
index 0000000..68dbf4d
--- /dev/null
+++ b/os/cez/modules/specialisation/heater.nix
@@ -0,0 +1,31 @@
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
+let
+  heater = pkgs.writeShellApplication {
+    name = "heater";
+    runtimeInputs = with pkgs; [
+      vulkan-tools
+      mangohud
+    ];
+
+    text = ''
+      MESA_VK_WSI_PRESENT_MODE=immediate mangohud vkcube --present_mode 0
+    '';
+  };
+  username = config.global.userdata.name;
+in
+{
+  imports = [ ./nvidia.nix ];
+
+  services.logind.settings.Login.HandleLidSwitch = "ignore";
+  environment.systemPackages = [ heater ];
+  home-manager.users.${username}.imports = [
+    {
+      wayland.windowManager.sway.settings.exec = [ "${lib.getExe heater}" ];
+    }
+  ];
+}
diff --git a/os/cez/modules/specialisation/nvidia.nix b/os/cez/modules/specialisation/nvidia.nix
new file mode 100644
index 0000000..3ac30b4
--- /dev/null
+++ b/os/cez/modules/specialisation/nvidia.nix
@@ -0,0 +1,25 @@
+{ lib, ... }:
+{
+  boot = {
+    kernelParams = [ "transparent_hugepage=always" ];
+    kernel.sysctl."vm.max_map_count" = 2147483642;
+  };
+
+  environment.variables = {
+    DRI_PRIME = 1;
+    __NV_PRIME_RENDER_OFFLOAD = 1;
+    __VK_LAYER_NV_optimus = "NVIDIA_only";
+    __GLX_VENDOR_LIBRARY_NAME = "nvidia";
+  };
+
+  hardware.nvidia = {
+    open = true;
+    nvidiaSettings = false;
+    prime.sync.enable = true;
+  };
+
+  services = {
+    xserver.videoDrivers = [ "nvidia" ];
+    tlp.settings.PLATFORM_PROFILE_ON_AC = lib.mkForce "performance";
+  };
+}
-- 
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